Commit 2dfc383a authored Mar 26, 2006 by Akinobu Mita Committed by Linus Torvalds Mar 26, 2006

[PATCH] bitops: generic fls64()



This patch introduces the C-language equivalent of the function: int
fls64(__u64 x);

In include/asm-generic/bitops/fls64.h

This code largely copied from: include/linux/bitops.h

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 136abb32

include/asm-generic/bitops/fls64.h

0 → 100644

+12 −0

Original line number	Diff line number	Diff line
		#ifndef _ASM_GENERIC_BITOPS_FLS64_H_
		#define _ASM_GENERIC_BITOPS_FLS64_H_

		static inline int fls64(__u64 x)
		{
		__u32 h = x >> 32;
		if (h)
		return fls(h) + 32;
		return fls(x);
		}

		#endif /* _ASM_GENERIC_BITOPS_FLS64_H_ */